some webpages had his iq estimated based on his sat scores. bushs SAT score was 1206 (566 Verbal, 640 Math). See the upper-left
corner of his yale transcript
http://www.iuptown.com/YaleProtest/bushs_yale_transcript.htm

this page has a conversion of pre-1974 SAT scores to iq
http://members.shaw.ca/delajara/Pre1974SAT.html

based on that conversion chart bushs iq would be about 129.

deffinatly nothing amazing but could deffinatly be worse. not that it matters since it doesn't change his position as a puppet.